/
tracklistutil.go
83 lines (72 loc) · 1.81 KB
/
tracklistutil.go
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package util
import (
"slices"
"github.com/dweymouth/supersonic/backend/mediaprovider"
"github.com/dweymouth/supersonic/sharedutil"
)
type TrackListModel struct {
Track *mediaprovider.Track
Selected bool
}
func ToTrackListModels(trs []*mediaprovider.Track) []*TrackListModel {
return sharedutil.MapSlice(trs, func(tr *mediaprovider.Track) *TrackListModel {
return &TrackListModel{Track: tr, Selected: false}
})
}
func SelectedTracks(tracks []*TrackListModel) []*mediaprovider.Track {
return sharedutil.FilterMapSlice(tracks, func(tm *TrackListModel) (*mediaprovider.Track, bool) {
return tm.Track, tm.Selected
})
}
func SelectedTrackIDs(tracks []*TrackListModel) []string {
return sharedutil.FilterMapSlice(tracks, func(tm *TrackListModel) (string, bool) {
return tm.Track.ID, tm.Selected
})
}
func SelectTrack(tracks []*TrackListModel, idx int) {
if tracks[idx].Selected {
return
}
UnselectAllTracks(tracks)
tracks[idx].Selected = true
}
func SelectAllTracks(tracks []*TrackListModel) {
for _, tm := range tracks {
tm.Selected = true
}
}
func UnselectAllTracks(tracks []*TrackListModel) {
for _, tm := range tracks {
tm.Selected = false
}
}
func SelectTrackRange(tracks []*TrackListModel, idx int) {
if tracks[idx].Selected {
return
}
lastSelected := -1
for i := len(tracks) - 1; i >= 0; i-- {
if tracks[i].Selected {
lastSelected = i
break
}
}
if lastSelected < 0 {
tracks[idx].Selected = true
return
}
from := min(idx, lastSelected)
to := max(idx, lastSelected)
for i := from; i <= to; i++ {
tracks[i].Selected = true
}
}
func FindTrackByID(tracks []*TrackListModel, id string) (*mediaprovider.Track, int) {
idx := slices.IndexFunc(tracks, func(tr *TrackListModel) bool {
return tr.Track.ID == id
})
if idx >= 0 {
return tracks[idx].Track, idx
}
return nil, -1
}